Metal knife block



FIG. 1 is a front perspective view of a metal knife block face plate, showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a first side elevational view thereof;

FIG. 6 is a second side elevational view thereof;

FIG. 7 is a third side elevational view thereof; and,

FIG. 8 is a fourth side elevational view thereof.

The broken line portions are included to show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a metal knife block, as shown and described. 